Checking the power supply and ground for the rear electronic module (REM)

Check the fuse in the cargo compartment fusebox for the rear electronic module (REM).

Check the connector for the rear electronic module (REM). Check for contact resistance and oxidation.

Check the ground lead between the control module and the ground terminal. Check for an open-circuit. Also check the ground terminal. Check for contact resistance and oxidation.

Remedy as necessary.

Other information: 

• To access the connector for the rear electronic module (REM) and the rear fuses, see Relay/fuse box cargo compartment/Rear electronic module (REM), replacing
• To connect the breakout box, see Connecting the breakout box
• For information about signals and connectors, see Signal specification
• For information about checking wiring and terminals see Checking wiring and terminals .

Fig 1: Identifying Breakout Box

Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 2: Identifying Ohmmeter

Courtesy of VOLVO CARS OF NORTH AMERICA.

Was a fault detected? 

• YES 

  Refer to Checking the function of the rear electronic module (REM) 

• NO 

  Refer to Signal missing